The table below provides estimates of the potential benefits and costs of installing different quantities of solar PV panels at your school

Capacity(kWp) Panels Area (m2) Annual self consumed solar electricity (kWh) Annual exported solar electricity (kWh) Annual output from panels (kWh) Reduction in mains consumption Annual saving Estimated cost Payback years
1 3 4 890 0 890 0.7% £110 £2,400 22 years
2 7 10 1,800 0 1,800 1.4% £210 £3,200 15 years
4 13 19 3,600 0 3,600 2.8% £430 £4,800 11 years
8 27 39 7,200 0 7,200 5.6% £860 £7,900 9 years
16 53 76 14,000 300 14,000 11% £1,700 £14,000 8 years
20 65 94 17,000 900 17,000 13% £2,000 £17,000 8 years
32 107 154 23,000 5,300 29,000 18% £3,100 £26,000 9 years
64 213 307 34,000 23,000 57,000 27% £5,300 £49,000 9 years
128 427 615 46,000 68,000 110,000 36% £9,000 £89,000 10 years
Installing solar PV at your school will reduce the electricity you consume from the national grid, and reduce your school's carbon emissions.  Your PTA might be prepared to help you raise some of the cost of installing the panels. 

The estimates in the table assume you have roof space and that is it roughly south facing - as this is best for schools whose peak demand is during the middle of the day when south facing panels produce the most electricity.

The benefits of solar PV will be reduced if you make your school more energy efficient. However, if you want your school to reduce its carbon emissions you should consider both installing solar panels and reducing your electricity consumption.



Energy Sparks supports Wybourn Community Primary School in partnership with Sheffield City Council